22339 + Interview Questions in Biology in Class 11 Page 330 InterviewSolution

16451.	Question :In the given structure of a Monocotyledonous seed label the parts a, b, c, d, e. Give the function of part ‘a’.
Answer» Solution :(a) Endosperm (b) Scutellum (C) Coleoptile (d) COLEORRHIZA (E) ALEURONE layer Function of (a)—Provide nutrition.

Discussion

16452.	Question : In the given mechanism, diaphragm, sternum and intercostal muscles work work together to "_____" the thoracic volume and thereby pulmonary volume. This lead to "_____"in intra-pulmonary pressure to slightly "_____" the atmospheric pressure, causing expiration. Select the correct sequnence of words to complete the above paragraph ?
Answer» decrease, decrease, below increase, decrease, above decrease, increase, above increase, increase, below Solution :During inspiration, the contraction of EXTERNAL intercostal muscles lifts up the ribs and the sternum to increase THORACIC volume. The given diagram shos expiration PROCESS. The relaxing diaphrapm and intercoastalmuscles return to their normal positions which reduce the thoracic volume and thereby the pulmonary pressure to slightly above the atmospheric pressure causing the explusion of air from the LUNGS, i.e,expiration.

Discussion

16453.	Question : In the given flow chart the flow of water is shown from soil to xylem of the root. Identify the tissues involved in steps A nad B
Answer» A -HYPODERMIS , B - protoxylem A - Medullary RAYS ,B - Phloem A - Endodermis , B - Phloem A - "Endodermis", B -"Protoxylem" SOLUTION :N//A

Discussion

16454.	Question : In the gene therapy far SCID, _______ cells are removed from the blood, and ADA gene is introduced into it using retrovirus.
Answer» RBC Wobe LYMPHOCYTES MONOCYTES ANSWER :C

Discussion

16455.	Question : In the formation of 50 zygotes in a tobacco plant, the minimum number of meiosis involved will be
Answer» 59 63 109 99 Answer :B

Discussion

16456.	Question : In the foolwing simplified model of a nutrient cycle, identify A,B,C,D and E
Answer» `{:(A,B,C,D,E),("Producers",underset("SOLUTION")("Soil"),"DETRITUS","Weathering","Decomposition"):}` `{:(A,B,C,D,E),("Producers",underset("solution")("Soil"),"Detritus","Decomposition","Weathering"):}` `{:(A,B,C,D,E),("Producers","Detritus",underset("solution")("Soil"),"Weathering","Decomposition"):}` `{:(A,B,C,D,E),("Producers","Detritus",underset("solution")("Soil"),"Decomposition","Weathering"):}` Solution :N//A

Discussion

16457.	Question : In the following question, an Assertion (A) is followed by a Corresponding Reson (R). Mark the correct answer.
Answer» If both Assertion and Reason are ture and the Reason is the CORRECT explanation of the Assertion. PECTORAL girdle of mammals SKULL of frog SPERM of mammals ANSWER :B

Discussion

16458.	Question : In the following picture, plant part is modified for
Answer» storage respiration support protection Answer :A

Discussion

16459.	Question : In the following, how sapwood is converted into heart wood?
Answer» By DEGENERATION of protoplast of living cell Tyloses formation By deposition of RESIN, oil, GUMS etc All of the above Answer :D

Discussion

16460.	Question : In thefollowing flow chart, replace the symbols a, b, c and d withappropriate terms. Brieflyexplain the process and give any two application of it.
Answer» Solution : USEFULNESS : (i) For the formation of ETHYL ALOCHOL . (ii) For making of curd from milk in THEPRESENCE of lactobacillus BACTERIA .

Discussion

16461.	Question : In the fluid mosaic membrane model, the phospholipid bilayer :
Answer» is sandwiched between TWO protein layers is COVERED by a single protein layer has PROTEINS EMBEDDED in it lies on top of a single protein layer Solution :has proteins embedded in it

Discussion

16462.	Question : In the five kingdom system of Whittaker, how many kingdoms are eukaryotes ?
Answer» Solution :In the five kingdom - SYSTEM of Whittaker four KINGDOMS as eukaryotes which are as follow : (a) Protista (B) Fungi (C) Plantae (d) ANIMALIA

Discussion

16463.	Question : In the five-kingdom classification, Chlamydomonas and Chlorella have been included in
Answer» Monera Protista Algae Plantae Answer :B

Discussion

16464.	Question : In the figure of sigmoid growth curve given below, label segments 1, 2 and 3.
Answer» SOLUTION :(1) Lag phase (2) Exponential phase and (3) Stationary phase

Discussion

16465.	Question :In the figure of sigmoid and curve given below, label the segments A, B and C.
Answer» SOLUTION :A = LAG phase, B = LOG phase and C = Steady STATE phase.

Discussion

16466.	Question : In the figure given below, theblack line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll - a, answer the followings : (a) What does the action spectrum indicate ? How can we plot an action spectrum ?Explain with an example. (b) How can we derive an absorption spectrum reaction of photosynthesis, why do the acation spectrum and absorption spectrum not overlap ?
Answer» Solution :The effectiveness of various wavelenght of light can be noted down on photosynthesis and rate of photosynthesis can be decided. It is CALLED as action SPECTRUM of photo synthesis. (b) The effectiveness of various more lenghts of light can be noted dwon on definite pigments and the GRAPH which is made is called absorption spectrum of pigment. (c ) Chloropyll-a is responsible for light reaction of photosynthesis. But action specytrum and absorption spectrum do not overlap each other because chlorphyll-a is mainly a pigment associated with absorption of light energy. Moreover other pigments like chlorophyll-b , xanthophylls and caotenoids are accesory pigments. They also absorb light energy and transport that energy towards chlorophyll. In fact they are UNABLE to find expanded wavelenght which is useful is photosynthesis but they prevent chlorophyll-a from photooxidation.

Discussion

16467.	Question : In the figure given below, the black line ( upper ) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll-a, answer the following (a) What does the action spectrum indicate? How can we plot an action spectrum ? Explain with an example. (b) How can we drive an absorption spectrum for any substance ? ( c) If chlorophyll-a is responsible for light reaction of photosynthesis, why do the action spectrum and absorption spectrum not overlaps ?
Answer» Solution :(a) The effectiveness of different wavelengths of LIGHT on photosynthesis is measured and the rate of photosynthesis is plotted. This is called the action spectrum of photosynthesis. (b) Absorption of different wavelength of light by a particular pigment is plotted and the GRAPH is called the absorption spectra of that pigment . ( c) Chlorophyll-a is responsible for light reaction of photosynthesis, but the action spectrum and absorption spectrum do not overlap because, though chlorophyll-a is the main pigment responsible for absorption of light, other thylakoid pigments like chlorophyll-b, xanthophylls, carotenoid, which areaccessory pigments, also ABSORB and transfer the energy to chlorophyll-a Indeed they do not enable a wider range of wavelenght of incoming light to be utilised for photosynthesis but also protect chlorohyll-a from PHOTOOXIDATION.

Discussion

16468.	Question : In the fern cycle, which of the following generation is dominant ?
Answer» HAPLOID GAMETOPHYTE DIPLOID gametophyte Haploid SPOROPHYTE Diploid sporophyte SOLUTION :Diploid sporophyte

Discussion

16469.	Question : In the female of the pine trees,_________occurs in the 1^(st) year cone while__________occurs in the 2nd year cone.
Answer» SOLUTION :POLLINATIONS, FERTILISATION

Discussion

16470.	Question : In the evolution of animals a heart to pump the blood is found for the first time in
Answer» Annelids Roundworms Arthropods Flat worms Solution :In EARTHWORM, an annelid, 4 pairs of THICK MUSCULAR, pulsatile hearts are PRESENT.

Discussion

16471.	Question :In the drupe of Cocos, the hard and stony part
Answer» EPICARP SEED coat Endocarp Mesocarp Answer :C

Discussion

16472.	Question : In the DNA molecule
Answer» The total AMOUNT of purine nucleotides and pyramidine nucleotides is not always equal There are two strands which RUN parallel in the `5'rarr3'` direction The proportion of ADENINE in relation to THYMINE varies with the organism These are two strands which run antiparallel one in `5'rarr3'` direction and other in `3'rarr 5'` Answer :D

Discussion

16473.	Question : In the diagram shown below label A,B,C. What type of photosphorylation is possible in this ?
Answer» SOLUTION : This FIGURE is of CYCLIC PHOTOPHOSPHORYLATION

Discussion

16474.	Question : In the diagram shown below, label A, B and C. What type of phosphorylation is possible in this ?
Answer» Solution :(A) `E^(-)`ACCEPTOR (B) Electron transport system (C) CHLOROPHYLL P700

Discussion

16475.	Question : In the diagram shown below label A,B,C . What type of phosphorylation ispossible in this ?
Answer» Solution :A-Electron acceptor C-Chlorophyll(PHOTOSYSTEM I ) `P_(700)` The cyclic photophsophorylation is SHOWN in the above figure. .

Discussion

16476.	Question : In the diagram of the section of bone tissue given below, certain parts have been indicated by alphabets, choose matched with the parts which they indicate
Answer» A=Interstitial LAMELLAE, B=LACUNA with OSTEOCYTES, C=Blood vessels, D=Nerve, E=Canaliculi, F=Haversian canal, G=Lamellae A=Interstitial lamellae, B=Osteocytes in the lacuna, C=Blood vessels, D=Nerve, E=Lamellae, F=Haversian SYSTEM, G=Canaliculi A=Lamellae, B=Lacuna with osteocytes, C=Artery, D=Lymphatic vessels, E=Canaliculi, F=Vein, G=Haversian canal A=Interstitial lamellae, B=Osteocytes, C=Nerve, D=Blood vessel, E=Lamellae, F=Haversian canal, G=Canaliculi Answer :C

Discussion

16477.	Question : In the diagram of the reproductive system of earthworm A, B, C, D and E represent:
Answer» A = Seminal VESICLE, B = Spermathecae, C = PROSTATE gland, D = Ovary, E = Acessory gland A = Seminal vesicle, B = Ovary, C = Acessory gland, D = Spermathecae, E = Prostate gland A = Spermathecae, B = Seminal vesicle, C = Acessory gland, D = Ovary, E = Prostate gland A = Spermathecae, B = Seminal vesicle, C = Ovary, D = Acessory gland, E= Prostate gland. Answer :D

Discussion

16478.	Question : In the diagramof Identicalthe aprtsmarkedas A,B,C,D.
Answer» A. phellem, B. Complementry tissue, C.PHELLODERM,D.PHELLOGEN . A . Complementarytissue , B .Phellem , C . Phellogen , D . Phelloderm A. Phellogen , B. Phellem, C. Phelloderm,D. complementarytissue A.Phelloderm, B. Phellem, C . Complementarytissue, D . Phellogen SOLUTION :A. phellem , B. COMPLEMENTARY tissue, D. Phellogen

Discussion

16479.	Question : In the diagram of excretory system of human beings given below, identify A to D structure.
Answer» ANSWER :3

Discussion

16480.	Question : In the descending limb of loop of Henle, the filtrate becomes progressively(a) isotonic(b) hypotonic(c) hypertonic(d) watery
Answer» isotomic hypotonic hypertonic watery

Discussion

16481.	Question : In the circulatory system of Pheretima A, B, C and D represent
Answer» A - Lateral HEARTS, B - Subneural VESSEL, C- Commissural vessel, D = Latero - oesophageal vessel A - Lateral hearts, B – Latero - oesophageal vessel, C-Subneural vessel, D-Commissural vessel A - Lateral hearts, B - Commissural vessel, C - Subneural vessel, D- Latero - oesophageal vessel A-Commissural vessel, B - Lateral hearts, C - Latero - oesophageal vessel D-Sub - NEURAL vessel ANSWER :C

Discussion

16482.	Question : In the chemistry of vision in mammals, the photosensitive substance is called
Answer» rhodopsin melanin sclerotin retinol Solution :Rhodopsin is a pigment present in the rod cells of the retina.It consists of two components-opsin and RETINAL (=retinene).Retinal is an aldehyde of vitamin A which absorbs light FALLING on the rod and changes its form and separates from the opsin component This INITIATES the transmission of a NERVE impulse to the brain.Rhodopsin is a PHOTOSENSITIVE substance and allows vision in dim light (night vision).

Discussion

16483.	Question : In the chart of photophosphorylation, what does a represent ?
Answer» Cyt a Cyt `a_(3)` FRS PQ Solution :Step in non-cyclic PHOTOPHOSPHORYLATION INCLUDE PASSAGE of electrons along `PQ to Cyt b_(6) Cyt fto PC to PS I to FRS to FD`.

Discussion

16484.	Question : In the central nervous system, myelinated fibres from the ______ while the non-myelinated fibre cells from the ______
Answer» GREY MATTER, WHITE matter white matter, grey matter ependymal CELLS, neurosecretory cells neurosecretory cells, ependymal cells Answer :B

Discussion

16485.	Question : State whether the following statement is true or false. In the cells that line the lumen of the small intestine, gapjunctions keep materials from the digestive tract fromslipping between the cells and entering the tissues. A. TrueB. False
Answer» ANSWER :FALSE

Discussion

16486.	Question : In the central nervous system, interneuron space is filled by
Answer» connective TISSUE NERVE cells NEUROGLIA cells AXONS Answer :C

Discussion

16487.	Question : In the case of animals related classes are included in
Answer» ORDER DIVISION PHYLUM Sub-division ANSWER :C

Discussion

16488.	Question : In the capillary theory, what are thecohesive and adhesive forces?
Answer» SOLUTION :Cohesive FORCES are amongst the watermolecules and adhesive forces are between the water molecules and xylem VESSELS.

Discussion

16489.	Question : In the bryophytes, the gametophyte stage consists of first stage which is a_________
Answer» SOLUTION :Protoneme

Discussion

16490.	Question : In the book 'Historia Plantarum' plant classification is based on
Answer» ECONOMIC importance Habit SEXUAL CHARACTER Evolutionary trends ANSWER :B

Discussion

16491.	Question : In the blood, about 70% CO_2, is carried as bocarbonates due to the reaction CO_2 + H_2O to H_2CO_2 Name the enzyme catalysing the above reaction.
Answer» SOLUTION :CARBONIC ANHYDRASE

Discussion

16492.	Question : In the binomial nomenclature the scientific name of an organism has two words. The order of these two words is
Answer» GENERIC NAME and SPECIFIC name specific name and generic name FAMILY name and generic name generic name and family name Answer :A

Discussion

16493.	Question : In the axoneme of cilium, the pair of central microtubules are connected to peripheral to peripheral microtubules (doublet) by
Answer» AXIAL spoke Radial spoke Linkers Inter DOUBLET bridge Answer :B

Discussion

16494.	Question : In the accompanying diagram of a part of the human body, the structures belonging to the central nervous system are labelled as
Answer» A and C B and C A and D C and D Solution :In the given figure, structures A and D are brain and spinal cord RESPECTIVELY , and these structures belong to central neural SYSTEM.Structures 'B' and 'C' are the NERVES arising from brain and spinal cord respectively and thus they belong to peripheral neural system.

Discussion

16495.	Question : In the above observation, the active substances were later identified as
Answer» Abscisic acid Gibberellic acid Indole acetic acid `N^(6)`-furfurylamino purine SOLUTION : In the above OBSERVATION, the ACTIVE substances were LATER identified as gibberellic acid.

Discussion

16496.	Question : In the absence of a respiratory pigment, how exchange ofgases in the cockroach takes place?
Answer» SOLUTION :Through the TRACHEAL SYSTEM.

Discussion

16497.	Question : In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be.............................
Answer» B O AB A Solution :AB

Discussion

16498.	Question : In systemic circulation , blood from the .........ventricle is carried by a network of arteries arterioles and capillaries to the tissues.
Answer» DEOXYGENATED right OXYGENATED LEFT oxygenated right deoxygenated left Solution :oxygenated left

Discussion

16499.	Question :In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called ……….
Answer» SOLUTION :PNEUMATOPHORES

Discussion

16500.	Question : In swampy areas like the sunderbans in West Bengal, plants bear special kind of roots called ……
Answer» Solution :For ANSWER see section-A, Q. No. 4(C,)

Discussion

Explore topic-wise InterviewSolutions in .

Question :In the given structure of a Monocotyledonous seed label the parts a, b, c, d, e. Give the function of part ‘a’.

Question : In the given flow chart the flow of water is shown from soil to xylem of the root. Identify the tissues involved in steps A nad B

Question : In the gene therapy far SCID, _______ cells are removed from the blood, and ADA gene is introduced into it using retrovirus.

Question : In the formation of 50 zygotes in a tobacco plant, the minimum number of meiosis involved will be

Question : In the foolwing simplified model of a nutrient cycle, identify A,B,C,D and E

Question : In the following question, an Assertion (A) is followed by a Corresponding Reson (R). Mark the correct answer.

Question : In the following picture, plant part is modified for

Question : In the following, how sapwood is converted into heart wood?

Question : In thefollowing flow chart, replace the symbols a, b, c and d withappropriate terms. Brieflyexplain the process and give any two application of it.

Question : In the fluid mosaic membrane model, the phospholipid bilayer :

Question : In the five kingdom system of Whittaker, how many kingdoms are eukaryotes ?

Question : In the five-kingdom classification, Chlamydomonas and Chlorella have been included in

Question : In the figure of sigmoid growth curve given below, label segments 1, 2 and 3.

Question :In the figure of sigmoid and curve given below, label the segments A, B and C.

Question : In the fern cycle, which of the following generation is dominant ?

Question : In the female of the pine trees,_________occurs in the 1^(st) year cone while__________occurs in the 2nd year cone.

Question : In the evolution of animals a heart to pump the blood is found for the first time in

Question :In the drupe of Cocos, the hard and stony part

Question : In the DNA molecule

Question : In the diagram shown below label A,B,C. What type of photosphorylation is possible in this ?

Question : In the diagram shown below, label A, B and C. What type of phosphorylation is possible in this ?

Question : In the diagram shown below label A,B,C . What type of phosphorylation ispossible in this ?

Question : In the diagram of the section of bone tissue given below, certain parts have been indicated by alphabets, choose matched with the parts which they indicate

Question : In the diagram of the reproductive system of earthworm A, B, C, D and E represent:

Question : In the diagramof Identicalthe aprtsmarkedas A,B,C,D.

Question : In the diagram of excretory system of human beings given below, identify A to D structure.

Question : In the descending limb of loop of Henle, the filtrate becomes progressively(a) isotonic(b) hypotonic(c) hypertonic(d) watery

Question : In the circulatory system of Pheretima A, B, C and D represent

Question : In the chemistry of vision in mammals, the photosensitive substance is called

Question : In the chart of photophosphorylation, what does a represent ?

Question : In the central nervous system, myelinated fibres from the ______ while the non-myelinated fibre cells from the ______

Question : State whether the following statement is true or false. In the cells that line the lumen of the small intestine, gapjunctions keep materials from the digestive tract fromslipping between the cells and entering the tissues. A. TrueB. False

Question : In the central nervous system, interneuron space is filled by

Question : In the case of animals related classes are included in

Question : In the capillary theory, what are thecohesive and adhesive forces?

Question : In the bryophytes, the gametophyte stage consists of first stage which is a_________

Question : In the book 'Historia Plantarum' plant classification is based on

Question : In the blood, about 70% CO_2, is carried as bocarbonates due to the reaction CO_2 + H_2O to H_2CO_2 Name the enzyme catalysing the above reaction.

Question : In the binomial nomenclature the scientific name of an organism has two words. The order of these two words is

Question : In the axoneme of cilium, the pair of central microtubules are connected to peripheral to peripheral microtubules (doublet) by

Question : In the accompanying diagram of a part of the human body, the structures belonging to the central nervous system are labelled as

Question : In the above observation, the active substances were later identified as

Question : In the absence of a respiratory pigment, how exchange ofgases in the cockroach takes place?

Question : In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be.............................

Question : In systemic circulation , blood from the .........ventricle is carried by a network of arteries arterioles and capillaries to the tissues.

Question :In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called ……….

Question : In swampy areas like the sunderbans in West Bengal, plants bear special kind of roots called ……

Question : In the female of the pine trees,_occurs in the 1^(st) year cone while__occurs in the 2nd year cone.

Question : In the central nervous system, myelinated fibres from the while the non-myelinated fibre cells from the